Late period

Hey everyone! I'm in need of a little help. So my boyfriend and I are sexual active and we do not use a condom. But it's not like every day. He lives far away from me for right now and I see him about every 2 weeks and when we see each other it's like we are rabbits lol. The last time we had sex was on June 6 and I'm suppose to be on my period and I haven't got it yet. I'm not too late so idk if it's just that my hormones are still off. But if I could have some help that would be amazing! Thanks in advance!